Process for manufacturing asphalt

Details Process for manufacturing asphalt Process for manufacturing asphalt

C - Chemistry, Metallurgy

04

B

C04B 24/08 (2006.01) C01B 17/02 (2006.01) C04B 24/36 (2006.01) C08K 3/06 (2006.01) C08K 5/01 (2006.01) C08L 95/00 (2006.01) C10C 3/00 (2006.01)

Patent

CA 2720397

A process for manufacturing asphalt is disclosed. The process comprises the steps of : (i) heating bitumen; (ii) heating aggregate; and (iii) mixing the hot bitumen with the hot aggregate in a mixing unit to form asphalt. From 10 to 200 wt% of sulphur, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii) and from 0.1 to 20 wt% of paraffin wax is added in at least one of the steps (i), (ii) or (iii).

Le procédé de fabrication de l'asphlalte de l'invention englobe les opérations suivantes: (i) chauffage du bitume; (ii) chauffage des agrégats; et (iii) mélange du bitume chaud et des agrégats chauds dans une unité mélangeuse pour la formation d'asphalte. De 10 à 200% en poids de soufre, sur la base du poids du bitume, sont ajoutés dans au moins l'une des opérations (i), (ii) ou (iii), et de 0,1% à 20% en poids de paraffine dans au moins l'une des opérations (i), (ii) et (iii).

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